GENERAL AND BASIS OF PRESENTATION - Mammoth Senior Secured Notes (Details) $ in Millions	Mar. 28, 2024 USD ($) geothermalPowerPlant
Project Subsidiaries, Geothermal Power Plants \| Mammoth Pacific, LLC
Debt Instrument [Line Items]
Equity ownership, excluding consolidated entity and equity method investee, percentage	100.00%
Number of contracted geothermal power plants, business combination \| geothermalPowerPlant	4
Mammoth Senior Secured Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 135.1
Debt instrument, basis spread on variable rate	1.25%
Debt instrument, number of semi-annual installment	46
Debt instrument, interest rate, stated percentage	6.73%
Floating Rate Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument floating rate notes to be issued	$ 9.0
Debt instrument commitment fee percentage	0.50%

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